Sky Screen: Am I, a Simple Warrior, the Last of the Noble Ones?

[Sky screen + alternate history + ensemble cast + intelligent characters + no romance] Xiahou Yan opened his eyes to find that he had transmigrated into the Great Wei dynasty as a child. Unfortunately, although its emperors bore the surname Cao, this was not the familiar Cao Wei of the Three Kingdoms, but a completely unknown dynasty. Curiously, though, the Sima clan still controlled the government of this Great Wei, and emperors had met untimely deaths three generations in a row. As an adult, Xiahou Yan had planned to lie low for a while before striking the Sima clan hard. But before he could put his plan into action, Great Wei was already on the brink of collapse. Faced with a fierce foreign army, the serving Grand General, Sima Ye, secretly led his clan out of the city under cover of night and surrendered to the invaders. At the court assembly the next day, Xiahou Yan furiously denounced the officials who wanted to surrender and urged them to fight to the bitter end. The eight-year-old emperor, Cao Xu, immediately appointed Xiahou Yan Grand General, placing him in charge of both government and military affairs. Before long, faced with disloyal noble scions, a corrupt central government, and a powerful foreign army, Xiahou Yan decided that saving the country was hopeless. He prepared to hold the city with his troops and cover the young emperor's escape south. Just then, a brilliant blue sky screen stretched across the heavens. [Hello, everyone! Today, we're going to talk about the bloodiest and darkest five-hundred-year period in Chinese history, and the countless people who died on the eve of that dark age, leaving behind one great regret: the last man of honor of the Cao Wei dynasty, Grand General Xiahou Yan!] “What? I'm just a brute who's about to charge in with the army, and I'm the last man of honor?” Xiahou Yan looked up at the sky screen, his head full of questions. From that moment on, the course of history began to change...